Convertors are electrical circuits that accept DC inputs and create DC outputs at a different voltage level. Typically, the conversion of DC voltage is achieved via high frequency switching action, which is complete through the use of both inductive and capacitive filters. Convertors change energy from one type into a type that is optimized for a particular load. They are used to improve and minimize the amount of input voltage, switch polarity, or to create multiple output voltages that offer the same input polarity, different input polarities, or varied input polarities.